Hydraulic valve.



No.'855,215. PATBNTED MAY 28, 1907. J. H. ALLENDORFER.

HYDRAULIC VALVE. APPLIUATION FILED 1n )v.19,19o4vl 2 SHEETS-SHEET 1.

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No. 855,215. PATENTED MAY 28, 1907. J. H. ALLENDORFER.

HYDRAULIC VALVE.

'PLIGATION FILED N0V.19,'1904.

2 SHEETS-SHEET 2.

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, and arranged with UNITED srAr'Hs PATENT OFFICE.

JOHN H. ALLENDORFER, or WEs'TMoNT BOROUGH, PENNSYLVANIA.

HYDRAULIC VALVE.

Specicaton of Letters Patent.

Application nea November 19, 1904.. serial No. 233.485.

To all whom t may concern:

Be it known that I, JOHN H. ALLENDOR- FER, a citizen of the United States, residing in the borough of Westmont, in the county and its object is to provide a valve of the class described which shall remain tight when closed, and in which the pressure on the valve disk is balanced so that it can be operated easily and freely in all its positions.

A further object is to provide a simple and economical hydraulic valve, in which the4 -moving parts will Wear evenly, thus preventuneven wear, and othering breakages due to wise so constructed as to facilitate the convenient inspection and substitution of all movable and wearing parts.

These objects are attained by the arrangement of parts and mechanismillustrated'in the annexed two sheets of drawings, in which- Figure 1 isa central vertical sectional elevation of the complete valve. -Fi 2 is an elevationof the valve at right ang es to the section shown in Fig. 1. Fi 3 is a plan of the valve. Fig. 4 is a plan o the valve with the upper portion or shell removed. Fig. 5 is a plan view of the under side of the valve disk showing the peculiar disposition of the ports and passageway.

Referring now to the various. drawings in which like characters of reference refer to like parts: l is the body of the valve, arranged with the delivery ducts 2 and 3 and the exhaust duct 4; 5 is the valve chest or shell arranged with the inlet duct 6.

7 is the valve disk provided with a stem 8 ports 9 and 10 and a passageway 11, as shown in Figs. 1, 4, and 5. The ports 9 and 10 extend through the valve disk but the passageway 1-1 is arranged to extend only part of the way into the body of the said disk and does not communicate with the valve chamber above, and the said passageway -1-1 is arranged so that, when either port 9 or 10 coincides with its corresponding -upper chamber of the valveshell ing,

delivery duct, the passageway 11 forms a continuous channel between the other delivery duct and the exhaust duct.

Patented May 28, 1907.

The valve stem is ,provided with a collar 12 i and 'this in turn is arranged wi/th a leather or rubber cup 13 and a washer 14 both of which are securely fastened thereto by a nut 15 which screws on the reduced neck of the valve stem, all' of which are located in the 5, as clearly illustrated in Fig. l.

' The collar 12 is of such dimension that the area of its lower face exposed to the fluid pressure is nearly equal to the area of the upper face of the valve disk 7. Thus, the pressure which tends to 'force the valve-disk 7 downward against its seat 30 is equalized by the upward pressure against the collar 12 together with the upward back pressure of the exhaust fluid against the valve-disk, while the valve is changed from one operative position to the other.

Any leakage past the collar 12 and its packcan be released by opening the stop-cock 16, so that no downward pressure may exist on the collar 12 to counteract the upward pressure thereon.

17 is a handle which serves to operate the valve-disk 7 and is fitted and secured to the valve stem, as shown in Fig. .1. The valve stem is preferably formed with a square end as shown in Fig. 2, in which the handle 17 is removed for clearness of illustration.

The body 1 and the shell 5 are secured together, preferably bystud bolts 29 (shown in 3), and the shell 5 is further arranged .with an annular projection 18 which fits in a corresponding groove 19 in the body 1, in which a gasket 20 of rubber or similar mate'- rial is placed. Asthe bolts 29 are tightened, this gasket is strongly compressed and leakage-past these parts is thus prevented.

The valve-disk 7 is ground fluid tight against its seat 30 and in order to reduce friction, a space 21 is provided between the sides.

IOO

of the said disk and the surrounding walls of the shell 5. To prevent the valve-disk from bein@r inadvertently raised from its seat, a

shoulder 22 ranged to valve-disk, as shown in Fig. 1.

A packing space 23 is provided in the body 1 and this vis filled with suitable packing 24 which is held in place by a gland 25 and compressed by a nut 26.

forming. part of the shell 5 is ar-- ploject over the edge ofthe said L 27 is a coupling whereby the pressure supply can be connected to the inlet 6, and 28 is a coupling nut or union for uniting said parts.

' The delivery and exhaust ducts may be prosimplifies the construction of the valve asa whole and prevents complication or interference with the balancing collar and adjustments as would otherwise be the case i the valve stem should be extended through theshell in the opposite direction to thatwhich it now has. 4 This arrangement and position of the valve stem 8 also facilitates independent adjustment of it and its attached parts without interfering with the balancing collar and its .packings i i The operation of the valve is as follows: Assuming the several'elements in the position shown in Figs. 1 and 4, theiiuid is admitted above the valve-disk through the inlet 6 and Hows downward through the' port 10 into the delivery duct 3 meanwhile, the port 9 is closed by the solid part of the valve-seat 30.` At the same time, the fluid which returns through the delivery duct 2 rises upward into and through the passage 1l and escapes through the exhaust 4. The valve-disk is now turned through an angle of ninety degrees by means of the handle 17 and the -port 9 thus made to coincide with'the delivery duct 2, while the delivery duct is connected` withithel exhaust duct 4, and the operation goes on as before, and vice versa.

Durin the greater part ofthe period of rotation of 4the valve-disk, both ports Q and 10 are closed and the pressure of the disk against the seat 30 which would otherwise be excessive, is balanced by the upward pressure of the Huid against thecollar 12, as explained hereinbefore, so th at the valve may be shifted easily from one position to the other.

It will be noted that, owing to the fact that the high ressure fluid'is admitted above the valve-dis there will not beanytendency to raise the said disk from its seat, notwithstanding the shoulder 22,' which may be omitted, `if desired. Furthermore, .on account of its circular. shape, the valve-disk will wear evenly and, therefore, no leakage will result from this source.l

Although I have shown my im rovements applied to a four-way valve, itwill readily be understood that they can be applied equallff well, to three-way or two-way valves, 'and I no notwish to be limited to the exact ar'- rangement of the parts shown and described, but may introduce such changes as are within the scope of this invention and as defined 6 in the claims. l What I claim and desire to secure by ters Patent is: 1. In a valve, a body having exhaust and delivery ducts formed therein, a shell secured Illetto said body, arranged with an inlet duct and a valve chamber, a revoluble flat disk 'in said chamber provided with a stemor spindle projecting outwardly of said body, a collar u on said stem or spindle subjected to the uid pressure acting upon the'said disk and arranged tobalarce the same, means for preventing .leakage past the said collar and means for releasing any fluidthatmay collect thereabove.

2. In a valve, a body having outlet and delivery ducts formed'therein, a shell secured duct, a stem or spindle connected, with said flat disk and projecting outwardly of said body, means for packing the stem, a collar upon said stem "or spindle above the valvedisk subjected to thefluid pressure` acting u 'on the said disk and arranged to balance t e same, a cu and washer secured above said collar and Iocatedtherewith in a recess within the shell, and'afstopcodk attached to IOC said recess for releasing any fluid that may collect abovevsaid collar. 3. In a valve, a body having exhaust and A delivery ducts formed therein, a shell secured to the said body arranged with an inlet duct4 and a valve chamber, means for securing the body ,and the shell, and a therebetween, a revoluble seated in said'valve chamber and uponthe said body, ports or openings'through said valve-disk anda passageway underneath and within the body thereof, a stem or spindle connected with'said fiat disk' and projecting outwardly of the valve body, packing sursounding the stem and compressed by a gland secured to the said body, a collar u on acking space at valve-disk IIO the said stem or spindle above the va vedisk, a cu and was located t erewith in 'a recess within sa1d shell, and a stopcock attached to said shell communicating with the said recess.

er secured to said collar j In testimony whereof I hereto affix my signature in the presence of two witnesses;

JOHN I H. ALLENDORFER.

Witnesses GEo. BEATTY,

STONE EDELEN. 

